CN215204597U

CN215204597U - Automatic control device for dump truck rear door safety hook

Info

Publication number: CN215204597U
Application number: CN202120279908.6U
Authority: CN
Inventors: 蒲焕勋
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-02-01
Filing date: 2021-02-01
Publication date: 2021-12-17
Anticipated expiration: 2031-02-01

Abstract

An automatic control device for a dump truck back door safety hook aims to provide a method for automatically opening or closing the safety hook by a driver operating a back door safety switch in a cab. The rear upright columns of two side plates of the large compartment of the dump truck are respectively of a hollow structure, 1 double-acting air cylinder is respectively arranged in the two rear upright columns, the pistons of the double-acting air cylinders respectively push the long arms of the safety hooks on the two sides of the large compartment when moving up and down, and the rear compartment door pins on the two sides of the rear compartment door are respectively disengaged or fastened through a lever principle, so that the aim of automatically opening or closing the safety hooks is fulfilled.

Description

Automatic control device for dump truck rear door safety hook

Technical Field

The utility model belongs to the technical field of the vehicle, a system's device that automatic opening and closing of big railway carriage or compartment door insurance couple in tipper carriage or compartment is related to.

Background

The dump truck is a prime force in the field of special-purpose automobiles, and is very common in domestic and foreign applications. In order to prevent accidents caused by the fact that a rear carriage door of the dump truck is opened accidentally due to failure of a locking mechanism of the rear carriage door of the dump truck, rear carriage door safety hooks are arranged on two sides of a large carriage, and can prevent the rear carriage door from being opened by self when the dump truck runs and needing to be opened in advance when the dump truck is parked and unloaded. When a vehicle is parked and unloaded, a driver needs to get off the vehicle, the vehicle is broken by a big hammer after walking to the vehicle, and then the vehicle returns to a cab to operate the lifting of a large compartment. Because the local environment is often abominable when the most common goods such as dregs, mineral products, etc. are unloaded, the driver is hard to operate this work and wastes time, and is very dangerous again, has the potential safety hazard. More seriously, if the driver forgets to open the safety hook and directly operates the lift of the large compartment, a serious accident of vehicle rollover will occur.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a system device which enables a safety hook to be automatically opened or closed by a driver operating a rear compartment door safety switch in a cab.

The utility model discloses a following technical scheme realizes the function.

The rear upright columns of two side plates of the large compartment of the dump truck are respectively of a hollow structure, 1 double-acting air cylinder is respectively arranged in the two rear upright columns, the pistons of the double-acting air cylinders respectively push the long arms of the safety hooks on the two sides of the large compartment when moving up and down, and the rear compartment door pins on the two sides of the rear compartment door are respectively disengaged or fastened through a lever principle, so that the aim of automatically opening or closing the safety hooks is fulfilled.

The driver's cabin is equipped with a back door safety switch for controlling the electromagnetic valve. The cylinder electromagnetic valve control circuit is connected with the large compartment lifting oil cylinder electromagnetic valve control circuit in series to ensure that the large compartment lifting oil cylinder can lift after the safety hook is opened. The cylinder is a double-acting steel standard cylinder, the rear end of the cylinder is arranged on a cylinder fixing shaft, the cylinder diameter is 50 mm, the reciprocating stroke is 150 mm, and the working air pressure is about 0.5 Mpa. The air source of the air cylinder is provided by the automobile air cylinder. The safety hook long arm is provided with a return tension spring, the other end of the return tension spring is fixed in the rear upright post below, and the safety hook long arm has the function of ensuring that the safety hook is in a locking state when an automobile runs or the pressure of an air cylinder is insufficient.

The utility model has the advantages that:

1. the automation degree of the dump truck is improved, the physical labor of a driver is reduced, the work risk of the driver in a complex environment outside a room is reduced, and the production efficiency is improved; 2. the major accident risk that the car is overturned due to the fact that the driver forgets to open the safety hook to lift the large compartment is avoided.

Drawings

Fig. 1 is a side view of the present invention.

Fig. 2 is a rear view (right side car) of the present invention.

Fig. 3 is a control schematic diagram of the present invention.

In the drawings: 1. the self-discharging truck comprises a large compartment of a self-discharging truck, 2. a rear upright post of a side plate of the large compartment, 3. a rear compartment door, 4. a double-acting cylinder, 5. a movable groove of a hook shaft, 6. a safety hook, 7. the hook shaft, 8. a base (also serving as an upper stop block) of the hook shaft and 9. a column pin of the rear compartment door.

Detailed Description

The utility model discloses an effect embodies at the dump truck in-process of unloading: 1. after the vehicle runs to the unloading position and stops, a driver operates the rear compartment door safety switch to be in an open state in a cab, the double-acting air cylinder 4 retracts, the long arm of the safety hook 6 is pulled to move upwards, the safety hook 6 is separated from the rear compartment door pin 9, the effect of the safety hook is relieved, the driver operates the large compartment 1 to lift, the front end of the large compartment 1 is lifted, and the rear compartment door 3 is automatically opened by means of gravity. 2. After unloading, the driver operates the large compartment 1 to fall down, the rear compartment door 3 automatically returns by gravity, the driver operates the safety switch of the rear compartment door to a closed state, the double-acting cylinder 4 extends out, the long arm of the safety hook 6 is pushed down, the hook returns to hook the column pin 9 of the rear compartment door, and the rear compartment door 3 is restored to be safe and locked.

Claims

1. The utility model provides a dump truck back door insurance couple automatic control device which characterized in that includes: 1 double-acting cylinder is respectively arranged in the rear upright posts of the two large compartment side plates, the pistons of the cylinders respectively push the long arms of the safety hooks on the two sides of the large compartment when moving up and down, and a rear compartment door safety switch of a control electromagnetic valve is arranged in the cab.

2. An automatic control device as claimed in claim 1, characterized in that the solenoid valve control circuit of the double-acting cylinder is connected in series with the solenoid valve control circuit of the large-compartment lift cylinder.

3. The automatic control device as claimed in claim 1, wherein the long arm of the safety hook is provided with a return tension spring.